gdb/
authorJan Kratochvil <jan.kratochvil@redhat.com>
Sun, 10 Mar 2013 18:04:00 +0000 (18:04 +0000)
committerJan Kratochvil <jan.kratochvil@redhat.com>
Sun, 10 Mar 2013 18:04:00 +0000 (18:04 +0000)
Fix entry-values in C++ across CUs.
* dwarf2loc.c (call_site_to_target_addr) <FIELD_LOC_KIND_PHYSNAME>: Use
lookup_minimal_symbol.  Add a comment.
* dwarf2read.c
(read_call_site_scope) <is_ref_attr> <die_is_declaration>: Prefer
DW_AT_linkage_name.

gdb/testsuite/
Fix entry-values in C++ across CUs.
* gdb.arch/amd64-tailcall-cxx.exp: New file.
* gdb.arch/amd64-tailcall-cxx1.S: New file.
* gdb.arch/amd64-tailcall-cxx1.cc: New file.
* gdb.arch/amd64-tailcall-cxx2.S: New file.
* gdb.arch/amd64-tailcall-cxx2.cc: New file.

gdb/ChangeLog
gdb/dwarf2loc.c
gdb/dwarf2read.c
gdb/testsuite/ChangeLog
gdb/testsuite/gdb.arch/amd64-tailcall-cxx.exp [new file with mode: 0644]
gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.S [new file with mode: 0644]
gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.cc [new file with mode: 0644]
gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.S [new file with mode: 0644]
gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.cc [new file with mode: 0644]

index 4680615570599f924e6d41158f2013500ff96c35..c0f199448fcabaf4e97eee595ae79b90c08b1939 100644 (file)
@@ -1,3 +1,12 @@
+2013-03-10  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+       Fix entry-values in C++ across CUs.
+       * dwarf2loc.c (call_site_to_target_addr) <FIELD_LOC_KIND_PHYSNAME>: Use
+       lookup_minimal_symbol.  Add a comment.
+       * dwarf2read.c
+       (read_call_site_scope) <is_ref_attr> <die_is_declaration>: Prefer
+       DW_AT_linkage_name.
+
 2013-03-08  Yao Qi  <yao@codesourcery.com>
 
        * tracepoint.c (_initialize_tracepoint): Indent the code.
index 8a61ae638710dd23d90ab790db60bd2735195a16..f300df2ac1cdd5dd9d47d066f68cc91f762b6574 100644 (file)
@@ -542,7 +542,9 @@ call_site_to_target_addr (struct gdbarch *call_site_gdbarch,
        struct minimal_symbol *msym;
 
        physname = FIELD_STATIC_PHYSNAME (call_site->target);
-       msym = lookup_minimal_symbol_text (physname, NULL);
+
+       /* Handle both the mangled and demangled PHYSNAME.  */
+       msym = lookup_minimal_symbol (physname, NULL, NULL);
        if (msym == NULL)
          {
            msym = lookup_minimal_symbol_by_pc (call_site->pc - 1);
index df6298b5f33160d33bd17f4af69948c5d88c8ffc..faee1a83304c4eb19bb76091f6e8c54780e840b8 100644 (file)
@@ -9812,9 +9812,18 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
       gdb_assert (target_cu->objfile == objfile);
       if (die_is_declaration (target_die, target_cu))
        {
-         const char *target_physname;
-
-         target_physname = dwarf2_physname (NULL, target_die, target_cu);
+         const char *target_physname = NULL;
+         struct attribute *target_attr;
+
+         /* Prefer the mangled name; otherwise compute the demangled one.  */
+         target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu);
+         if (target_attr == NULL)
+           target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name,
+                                      target_cu);
+         if (target_attr != NULL && DW_STRING (target_attr) != NULL)
+           target_physname = DW_STRING (target_attr);
+         else
+           target_physname = dwarf2_physname (NULL, target_die, target_cu);
          if (target_physname == NULL)
            complaint (&symfile_complaints,
                       _("DW_AT_GNU_call_site_target target DIE has invalid "
index 682814d8583377ba24e0bb4871fda5577158d8ee..81421ebd12e76acd19c0cc98872b625e9a9d4496 100644 (file)
@@ -1,3 +1,12 @@
+2013-03-10  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+       Fix entry-values in C++ across CUs.
+       * gdb.arch/amd64-tailcall-cxx.exp: New file.
+       * gdb.arch/amd64-tailcall-cxx1.S: New file.
+       * gdb.arch/amd64-tailcall-cxx1.cc: New file.
+       * gdb.arch/amd64-tailcall-cxx2.S: New file.
+       * gdb.arch/amd64-tailcall-cxx2.cc: New file.
+
 2013-03-08  Stan Shebs  <stan@codesourcery.com>
            Hafiz Abid Qadeer  <abidh@codesourcery.com>
 
diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-cxx.exp b/gdb/testsuite/gdb.arch/amd64-tailcall-cxx.exp
new file mode 100644 (file)
index 0000000..db2ab3c
--- /dev/null
@@ -0,0 +1,36 @@
+# Copyright (C) 2012-2013 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set opts {}
+standard_testfile amd64-tailcall-cxx1.S amd64-tailcall-cxx2.S
+
+if [info exists COMPILE] {
+    # make check RUNTESTFLAGS="gdb.arch/amd64-tailcall-cxx.exp COMPILE=1"
+    standard_testfile amd64-tailcall-cxx1.cc amd64-tailcall-cxx2.cc
+    lappend opts debug optimize=-O2
+} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+    verbose "Skipping ${testfile}."
+    return
+}
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} "${srcfile} ${srcfile2}" $opts] } {
+    return -1
+}
+
+if ![runto g] {
+    return -1
+}
+
+gdb_test "bt" "\r\n#0 +g \\(x=x@entry=2\\) at \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in f \\(x=x@entry=1\\) at \[^\r\n\]*\r\n#2 +0x\[0-9a-f\]+ in main .*"
diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.S b/gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.S
new file mode 100644 (file)
index 0000000..d988446
--- /dev/null
@@ -0,0 +1,367 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2012-2013 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* This source file was generated by:
+   g++ -o gdb.arch/amd64-tailcall-cxx1.S gdb.arch/amd64-tailcall-cxx1.cc -Wall -S -dA -O2 -g
+   Fedora GCC was used here to also test the case of missing DW_AT_linkage_name.
+   */
+
+       .file   "amd64-tailcall-cxx1.cc"
+       .text
+.Ltext0:
+       .p2align 4,,15
+       .globl  _Z1gi
+       .type   _Z1gi, @function
+_Z1gi:
+.LFB0:
+       .file 1 "gdb.arch/amd64-tailcall-cxx1.cc"
+       # gdb.arch/amd64-tailcall-cxx1.cc:22
+       .loc 1 22 0
+       .cfi_startproc
+.LVL0:
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+       # gdb.arch/amd64-tailcall-cxx1.cc:23
+       .loc 1 23 0
+       movl    %edi, v(%rip)
+# SUCC: EXIT [100.0%] 
+       ret
+       .cfi_endproc
+.LFE0:
+       .size   _Z1gi, .-_Z1gi
+       .section        .text.startup,"ax",@progbits
+       .p2align 4,,15
+       .globl  main
+       .type   main, @function
+main:
+.LFB1:
+       # gdb.arch/amd64-tailcall-cxx1.cc:30
+       .loc 1 30 0
+       .cfi_startproc
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+       subq    $8, %rsp
+       .cfi_def_cfa_offset 16
+       # gdb.arch/amd64-tailcall-cxx1.cc:31
+       .loc 1 31 0
+       movl    $1, %edi
+       call    _Z1fi
+.LVL1:
+       # gdb.arch/amd64-tailcall-cxx1.cc:32
+       .loc 1 32 0
+       xorl    %eax, %eax
+       addq    $8, %rsp
+       .cfi_def_cfa_offset 8
+# SUCC: EXIT [100.0%] 
+       ret
+       .cfi_endproc
+.LFE1:
+       .size   main, .-main
+       .globl  v
+       .bss
+       .align 4
+       .type   v, @object
+       .size   v, 4
+v:
+       .zero   4
+       .text
+.Letext0:
+       .section        .debug_info,"",@progbits
+.Ldebug_info0:
+       .long   0xb4    # Length of Compilation Unit Info
+       .value  0x4     # DWARF version number
+       .long   .Ldebug_abbrev0 # Offset Into Abbrev. Section
+       .byte   0x8     # Pointer Size (in bytes)
+       .uleb128 0x1    # (DIE (0xb) DW_TAG_compile_unit)
+       .long   .LASF1  # DW_AT_producer: "GNU C++ 4.8.0 20130220 (Red Hat 4.8.0-0.14) -mtune=generic -march=x86-64 -g -O2"
+       .byte   0x4     # DW_AT_language
+       .long   .LASF2  # DW_AT_name: "gdb.arch/amd64-tailcall-cxx1.cc"
+       .long   .LASF3  # DW_AT_comp_dir: ""
+       .long   .Ldebug_ranges0+0       # DW_AT_ranges
+       .quad   0       # DW_AT_low_pc
+       .long   .Ldebug_line0   # DW_AT_stmt_list
+       .uleb128 0x2    # (DIE (0x29) DW_TAG_subprogram)
+                       # DW_AT_external
+       .ascii "g\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx1.cc)
+       .byte   0x15    # DW_AT_decl_line
+       .long   .LASF4  # DW_AT_linkage_name: "_Z1gi"
+       .quad   .LFB0   # DW_AT_low_pc
+       .quad   .LFE0-.LFB0     # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_call_sites
+       .long   0x54    # DW_AT_sibling
+       .uleb128 0x3    # (DIE (0x48) DW_TAG_formal_parameter)
+       .ascii "x\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx1.cc)
+       .byte   0x15    # DW_AT_decl_line
+       .long   0x54    # DW_AT_type
+       .uleb128 0x1    # DW_AT_location
+       .byte   0x55    # DW_OP_reg5
+       .byte   0       # end of children of DIE 0x29
+       .uleb128 0x4    # (DIE (0x54) DW_TAG_base_type)
+       .byte   0x4     # DW_AT_byte_size
+       .byte   0x5     # DW_AT_encoding
+       .ascii "int\0"  # DW_AT_name
+       .uleb128 0x5    # (DIE (0x5b) DW_TAG_subprogram)
+                       # DW_AT_external
+       .long   .LASF0  # DW_AT_name: "main"
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx1.cc)
+       .byte   0x1d    # DW_AT_decl_line
+       .long   0x54    # DW_AT_type
+       .quad   .LFB1   # DW_AT_low_pc
+       .quad   .LFE1-.LFB1     # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_call_sites
+       .long   0x90    # DW_AT_sibling
+       .uleb128 0x6    # (DIE (0x7c) DW_TAG_GNU_call_site)
+       .quad   .LVL1   # DW_AT_low_pc
+       .long   0xa8    # DW_AT_abstract_origin
+       .uleb128 0x7    # (DIE (0x89) DW_TAG_GNU_call_site_parameter)
+       .uleb128 0x1    # DW_AT_location
+       .byte   0x55    # DW_OP_reg5
+       .uleb128 0x1    # DW_AT_GNU_call_site_value
+       .byte   0x31    # DW_OP_lit1
+       .byte   0       # end of children of DIE 0x7c
+       .byte   0       # end of children of DIE 0x5b
+       .uleb128 0x8    # (DIE (0x90) DW_TAG_variable)
+       .ascii "v\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx1.cc)
+       .byte   0x12    # DW_AT_decl_line
+       .long   0xa3    # DW_AT_type
+                       # DW_AT_external
+       .uleb128 0x9    # DW_AT_location
+       .byte   0x3     # DW_OP_addr
+       .quad   v
+       .uleb128 0x9    # (DIE (0xa3) DW_TAG_volatile_type)
+       .long   0x54    # DW_AT_type
+       .uleb128 0xa    # (DIE (0xa8) DW_TAG_subprogram)
+                       # DW_AT_external
+       .ascii "f\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx1.cc)
+       .byte   0x1a    # DW_AT_decl_line
+       .long   .LASF5  # DW_AT_linkage_name: "_Z1fi"
+                       # DW_AT_declaration
+       .uleb128 0xb    # (DIE (0xb1) DW_TAG_formal_parameter)
+       .long   0x54    # DW_AT_type
+       .byte   0       # end of children of DIE 0xa8
+       .byte   0       # end of children of DIE 0xb
+       .section        .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+       .uleb128 0x1    # (abbrev code)
+       .uleb128 0x11   # (TAG: DW_TAG_compile_unit)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x25   # (DW_AT_producer)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x13   # (DW_AT_language)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x1b   # (DW_AT_comp_dir)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x55   # (DW_AT_ranges)
+       .uleb128 0x17   # (DW_FORM_sec_offset)
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x10   # (DW_AT_stmt_list)
+       .uleb128 0x17   # (DW_FORM_sec_offset)
+       .byte   0
+       .byte   0
+       .uleb128 0x2    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x6e   # (DW_AT_linkage_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x12   # (DW_AT_high_pc)
+       .uleb128 0x7    # (DW_FORM_data8)
+       .uleb128 0x40   # (DW_AT_frame_base)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x1    # (DW_AT_sibling)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x3    # (abbrev code)
+       .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x4    # (abbrev code)
+       .uleb128 0x24   # (TAG: DW_TAG_base_type)
+       .byte   0       # DW_children_no
+       .uleb128 0xb    # (DW_AT_byte_size)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3e   # (DW_AT_encoding)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .byte   0
+       .byte   0
+       .uleb128 0x5    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x12   # (DW_AT_high_pc)
+       .uleb128 0x7    # (DW_FORM_data8)
+       .uleb128 0x40   # (DW_AT_frame_base)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x1    # (DW_AT_sibling)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x6    # (abbrev code)
+       .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x31   # (DW_AT_abstract_origin)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x7    # (abbrev code)
+       .uleb128 0x410a # (TAG: DW_TAG_GNU_call_site_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2111 # (DW_AT_GNU_call_site_value)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x8    # (abbrev code)
+       .uleb128 0x34   # (TAG: DW_TAG_variable)
+       .byte   0       # DW_children_no
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x9    # (abbrev code)
+       .uleb128 0x35   # (TAG: DW_TAG_volatile_type)
+       .byte   0       # DW_children_no
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0xa    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x6e   # (DW_AT_linkage_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x3c   # (DW_AT_declaration)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .byte   0
+       .byte   0
+       .uleb128 0xb    # (abbrev code)
+       .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .byte   0
+       .section        .debug_aranges,"",@progbits
+       .long   0x3c    # Length of Address Ranges Info
+       .value  0x2     # DWARF Version
+       .long   .Ldebug_info0   # Offset of Compilation Unit Info
+       .byte   0x8     # Size of Address
+       .byte   0       # Size of Segment Descriptor
+       .value  0       # Pad to 16 byte boundary
+       .value  0
+       .quad   .Ltext0 # Address
+       .quad   .Letext0-.Ltext0        # Length
+       .quad   .LFB1   # Address
+       .quad   .LFE1-.LFB1     # Length
+       .quad   0
+       .quad   0
+       .section        .debug_ranges,"",@progbits
+.Ldebug_ranges0:
+       .quad   .Ltext0 # Offset 0
+       .quad   .Letext0
+       .quad   .LFB1   # Offset 0x10
+       .quad   .LFE1
+       .quad   0
+       .quad   0
+       .section        .debug_line,"",@progbits
+.Ldebug_line0:
+       .section        .debug_str,"MS",@progbits,1
+.LASF4:
+       .string "_Z1gi"
+.LASF3:
+       .string ""
+.LASF2:
+       .string "gdb.arch/amd64-tailcall-cxx1.cc"
+.LASF1:
+       .string "GNU C++ 4.8.0 20130220 (Red Hat 4.8.0-0.14) -mtune=generic -march=x86-64 -g -O2"
+.LASF0:
+       .string "main"
+.LASF5:
+       .string "_Z1fi"
+       .ident  "GCC: (GNU) 4.8.0 20130220 (Red Hat 4.8.0-0.14)"
+       .section        .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.cc b/gdb/testsuite/gdb.arch/amd64-tailcall-cxx1.cc
new file mode 100644 (file)
index 0000000..7af9936
--- /dev/null
@@ -0,0 +1,32 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2013 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+volatile int v;
+
+__attribute__ ((noinline, noclone)) void
+g (int x)
+{
+  v = x;
+}
+
+extern void f (int x);
+
+int
+main ()
+{
+  f (1);
+}
diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.S b/gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.S
new file mode 100644 (file)
index 0000000..8a26d6f
--- /dev/null
@@ -0,0 +1,276 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2012-2013 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* This source file was generated by:
+   g++ -o gdb.arch/amd64-tailcall-cxx2.S gdb.arch/amd64-tailcall-cxx2.cc -Wall -S -dA -O2 -g
+   Fedora GCC was used here to also test the case of missing DW_AT_linkage_name.
+   */
+
+       .file   "amd64-tailcall-cxx2.cc"
+       .text
+.Ltext0:
+       .p2align 4,,15
+       .globl  _Z1fi
+       .type   _Z1fi, @function
+_Z1fi:
+.LFB0:
+       .file 1 "gdb.arch/amd64-tailcall-cxx2.cc"
+       # gdb.arch/amd64-tailcall-cxx2.cc:22
+       .loc 1 22 0
+       .cfi_startproc
+.LVL0:
+# BLOCK 2 freq:10000 seq:0
+# PRED: ENTRY [100.0%]  (FALLTHRU)
+       # gdb.arch/amd64-tailcall-cxx2.cc:23
+       .loc 1 23 0
+       addl    $1, %edi
+.LVL1:
+       jmp     _Z1gi
+.LVL2:
+# SUCC: EXIT [100.0%]  (ABNORMAL,SIBCALL)
+       .cfi_endproc
+.LFE0:
+       .size   _Z1fi, .-_Z1fi
+.Letext0:
+       .section        .debug_info,"",@progbits
+.Ldebug_info0:
+       .long   0x84    # Length of Compilation Unit Info
+       .value  0x4     # DWARF version number
+       .long   .Ldebug_abbrev0 # Offset Into Abbrev. Section
+       .byte   0x8     # Pointer Size (in bytes)
+       .uleb128 0x1    # (DIE (0xb) DW_TAG_compile_unit)
+       .long   .LASF0  # DW_AT_producer: "GNU C++ 4.8.0 20130220 (Red Hat 4.8.0-0.14) -mtune=generic -march=x86-64 -g -O2"
+       .byte   0x4     # DW_AT_language
+       .long   .LASF1  # DW_AT_name: "gdb.arch/amd64-tailcall-cxx2.cc"
+       .long   .LASF2  # DW_AT_comp_dir: ""
+       .quad   .Ltext0 # DW_AT_low_pc
+       .quad   .Letext0-.Ltext0        # DW_AT_high_pc
+       .long   .Ldebug_line0   # DW_AT_stmt_list
+       .uleb128 0x2    # (DIE (0x2d) DW_TAG_subprogram)
+                       # DW_AT_external
+       .ascii "f\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx2.cc)
+       .byte   0x15    # DW_AT_decl_line
+       .long   .LASF3  # DW_AT_linkage_name: "_Z1fi"
+       .quad   .LFB0   # DW_AT_low_pc
+       .quad   .LFE0-.LFB0     # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_call_sites
+       .long   0x71    # DW_AT_sibling
+       .uleb128 0x3    # (DIE (0x4c) DW_TAG_formal_parameter)
+       .ascii "x\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx2.cc)
+       .byte   0x15    # DW_AT_decl_line
+       .long   0x71    # DW_AT_type
+       .long   .LLST0  # DW_AT_location
+       .uleb128 0x4    # (DIE (0x59) DW_TAG_GNU_call_site)
+       .quad   .LVL2   # DW_AT_low_pc
+                       # DW_AT_GNU_tail_call
+       .long   0x78    # DW_AT_abstract_origin
+       .uleb128 0x5    # (DIE (0x66) DW_TAG_GNU_call_site_parameter)
+       .uleb128 0x1    # DW_AT_location
+       .byte   0x55    # DW_OP_reg5
+       .uleb128 0x5    # DW_AT_GNU_call_site_value
+       .byte   0xf3    # DW_OP_GNU_entry_value
+       .uleb128 0x1
+       .byte   0x55    # DW_OP_reg5
+       .byte   0x23    # DW_OP_plus_uconst
+       .uleb128 0x1
+       .byte   0       # end of children of DIE 0x59
+       .byte   0       # end of children of DIE 0x2d
+       .uleb128 0x6    # (DIE (0x71) DW_TAG_base_type)
+       .byte   0x4     # DW_AT_byte_size
+       .byte   0x5     # DW_AT_encoding
+       .ascii "int\0"  # DW_AT_name
+       .uleb128 0x7    # (DIE (0x78) DW_TAG_subprogram)
+                       # DW_AT_external
+       .ascii "g\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-tailcall-cxx2.cc)
+       .byte   0x12    # DW_AT_decl_line
+       .long   .LASF4  # DW_AT_linkage_name: "_Z1gi"
+                       # DW_AT_declaration
+       .uleb128 0x8    # (DIE (0x81) DW_TAG_formal_parameter)
+       .long   0x71    # DW_AT_type
+       .byte   0       # end of children of DIE 0x78
+       .byte   0       # end of children of DIE 0xb
+       .section        .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+       .uleb128 0x1    # (abbrev code)
+       .uleb128 0x11   # (TAG: DW_TAG_compile_unit)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x25   # (DW_AT_producer)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x13   # (DW_AT_language)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x1b   # (DW_AT_comp_dir)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x12   # (DW_AT_high_pc)
+       .uleb128 0x7    # (DW_FORM_data8)
+       .uleb128 0x10   # (DW_AT_stmt_list)
+       .uleb128 0x17   # (DW_FORM_sec_offset)
+       .byte   0
+       .byte   0
+       .uleb128 0x2    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x6e   # (DW_AT_linkage_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x12   # (DW_AT_high_pc)
+       .uleb128 0x7    # (DW_FORM_data8)
+       .uleb128 0x40   # (DW_AT_frame_base)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x1    # (DW_AT_sibling)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x3    # (abbrev code)
+       .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x17   # (DW_FORM_sec_offset)
+       .byte   0
+       .byte   0
+       .uleb128 0x4    # (abbrev code)
+       .uleb128 0x4109 # (TAG: DW_TAG_GNU_call_site)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x11   # (DW_AT_low_pc)
+       .uleb128 0x1    # (DW_FORM_addr)
+       .uleb128 0x2115 # (DW_AT_GNU_tail_call)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x31   # (DW_AT_abstract_origin)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x5    # (abbrev code)
+       .uleb128 0x410a # (TAG: DW_TAG_GNU_call_site_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2111 # (DW_AT_GNU_call_site_value)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x6    # (abbrev code)
+       .uleb128 0x24   # (TAG: DW_TAG_base_type)
+       .byte   0       # DW_children_no
+       .uleb128 0xb    # (DW_AT_byte_size)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3e   # (DW_AT_encoding)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .byte   0
+       .byte   0
+       .uleb128 0x7    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x3    # (DW_AT_name)
+       .uleb128 0x8    # (DW_FORM_string)
+       .uleb128 0x3a   # (DW_AT_decl_file)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x3b   # (DW_AT_decl_line)
+       .uleb128 0xb    # (DW_FORM_data1)
+       .uleb128 0x6e   # (DW_AT_linkage_name)
+       .uleb128 0xe    # (DW_FORM_strp)
+       .uleb128 0x3c   # (DW_AT_declaration)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .byte   0
+       .byte   0
+       .uleb128 0x8    # (abbrev code)
+       .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
+       .byte   0       # DW_children_no
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .byte   0
+       .section        .debug_loc,"",@progbits
+.Ldebug_loc0:
+.LLST0:
+       .quad   .LVL0-.Ltext0   # Location list begin address (*.LLST0)
+       .quad   .LVL1-.Ltext0   # Location list end address (*.LLST0)
+       .value  0x1     # Location expression size
+       .byte   0x55    # DW_OP_reg5
+       .quad   .LVL1-.Ltext0   # Location list begin address (*.LLST0)
+       .quad   .LVL2-1-.Ltext0 # Location list end address (*.LLST0)
+       .value  0x3     # Location expression size
+       .byte   0x75    # DW_OP_breg5
+       .sleb128 -1
+       .byte   0x9f    # DW_OP_stack_value
+       .quad   .LVL2-1-.Ltext0 # Location list begin address (*.LLST0)
+       .quad   .LFE0-.Ltext0   # Location list end address (*.LLST0)
+       .value  0x4     # Location expression size
+       .byte   0xf3    # DW_OP_GNU_entry_value
+       .uleb128 0x1
+       .byte   0x55    # DW_OP_reg5
+       .byte   0x9f    # DW_OP_stack_value
+       .quad   0       # Location list terminator begin (*.LLST0)
+       .quad   0       # Location list terminator end (*.LLST0)
+       .section        .debug_aranges,"",@progbits
+       .long   0x2c    # Length of Address Ranges Info
+       .value  0x2     # DWARF Version
+       .long   .Ldebug_info0   # Offset of Compilation Unit Info
+       .byte   0x8     # Size of Address
+       .byte   0       # Size of Segment Descriptor
+       .value  0       # Pad to 16 byte boundary
+       .value  0
+       .quad   .Ltext0 # Address
+       .quad   .Letext0-.Ltext0        # Length
+       .quad   0
+       .quad   0
+       .section        .debug_line,"",@progbits
+.Ldebug_line0:
+       .section        .debug_str,"MS",@progbits,1
+.LASF0:
+       .string "GNU C++ 4.8.0 20130220 (Red Hat 4.8.0-0.14) -mtune=generic -march=x86-64 -g -O2"
+.LASF2:
+       .string ""
+.LASF3:
+       .string "_Z1fi"
+.LASF1:
+       .string "gdb.arch/amd64-tailcall-cxx2.cc"
+.LASF4:
+       .string "_Z1gi"
+       .ident  "GCC: (GNU) 4.8.0 20130220 (Red Hat 4.8.0-0.14)"
+       .section        .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.cc b/gdb/testsuite/gdb.arch/amd64-tailcall-cxx2.cc
new file mode 100644 (file)
index 0000000..232f4fb
--- /dev/null
@@ -0,0 +1,24 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2013 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+extern void g (int x);
+
+__attribute__ ((noinline, noclone)) void
+f (int x)
+{
+  g (x + 1);
+}